428589025 has 6 divisors (see below), whose sum is σ = 531450422. Its totient is φ = 342871200.

The previous prime is 428589013. The next prime is 428589047. The reversal of 428589025 is 520985824.

It can be written as a sum of positive squares in 3 ways, for example, as 127080529 + 301508496 = 11273^2 + 17364^2 .

It is not a de Polignac number, because 428589025 - 2¹⁵ = 428556257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8571756 + ... + 8571805.

Almost surely, 2^428589025 is an apocalyptic number.

It is an amenable number.

428589025 is a deficient number, since it is larger than the sum of its proper divisors (102861397).

428589025 is a wasteful number, since it uses less digits than its factorization.

428589025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17143571 (or 17143566 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 428589025 is about 20702.3917700347. The cubic root of 428589025 is about 753.9577595964.

The spelling of 428589025 in words is "four hundred twenty-eight million, five hundred eighty-nine thousand, twenty-five".